Improvement in cooking-stoves



B. H. MENKE.

Cooking Stove.

Patented 0m. 5, 1869.

v 77358 ES: I

"chatted $121125 strut citiiiiirr.

Letters Patmt No. 95,501, dated October 5, 1869.

IMPROVEMENT IN COOKING-STOVES.

The Schedulereferred. to in these Letters Patent and making partbf thesame.

To all whom it may concern:

Be it known that I, BERNARD H. MENKE, of the I city of Cincinnati, inthe county of Hamilton, and

State of Ohio, have invented certain new and useful Improvements inStoves; and I do hereby declare that the following is a full, clear, andexact description of the construction and operation of the same,reference being had to the annexed drawings, making part of thisspecification.

Experience hasshown that stoves having large top plates, the differentparts of which are unequally exposed to the action of the fire, are veryliable to be fractured by a rapid heating -of the stove, causing agreatly unequal expansion of the different parts of the plate, andthereby fracturing it. 1 The top plates of cooking-stoves, as they arenow constructed, are very liable to this accident.

The object of my invention is to alleviate this difficulty. This I do bymaking a crack or fissure in the plate, extending froni the rear part tothe opening for the collar, and from thence to the large opening in theforward part of the plate, as clearly shown in the annexed drawings,figs. 1 and 2.

By this construe on, when fire is made in the stove, and the forwardparts of the plate more rapidly heated than the rear part, as theforward part expands by the action of the heat, the rear part is enabledto' eitpand with it, by widening the fissure, which closes again whenthe plate is brought to a uniform temperature and this, in agreatmeasu're, prevents the fracturing of the plate by its being rapidlyheated or cooled;

To enable others skilled in the art to fully understand and construct myinvention, I give the following descriptionof the same:

Figure l'is a perspective view "of the largetop plate of a cooking-stoveinverted.

Eigure 2 is a perspective view of the collar-piece detached fromthe topplate, also inverted.

Figure 3 is a perspective view'of the top plate of accoking-stove',showing a crack or fissure through its rear part. g

Figure 4. is another collar-piece, used on the plate shown in fig. 3. v

Like letters of reference indicate corresponding parts in allthefigures;

A A, fig. 1,reprcsent the large top plate of a fiattop cooking-stove.

In the application of my inventibn, this plate may be of the ordinaryform and construction, except in the following particulars: It has, inthe rear of the .plate, the crack or fissure B B, extending, from theback part of the plate, through the opening D, for the of the plate, asclearly shown in the drawing; also, theslotll, as shown in the drawing,fig. 1.

The collar-piece A A.

To put these two parts of the stove together, the tongue Gr, of thecollar-piece C, fig. 2, is first inserted in the slot F, fig. 1, and thecollar proper passed through the opening 1) and, ,when the whole stoveis put together, this collar-piece is held in place by the tongue Gr,tll6 flanges H H, and'the side walls of the flue, which fit into the,notchesformed by the flanges J J and projections K K, fig. 2.

- To make the crack or fissure'B B, I employ, the fol.- lowing method:

In casting the plate A A, I so construct the pattern as-to form. agroove on. the bottom part of the plate, on the line of the proposedcrack, this making the plate quite thin on this line; -and,'ivhen thuscast,

a slight stroke with a hammer makes the fracture desired. a

My invention may also be applied to the plate of a stove in the mannershown in figs. 3 and 4. In this construction, the crack or fissure isformed in the manner already described, and the collar-piece-L, fig. 4,is screwed on the plate with screws, the screws'passing, through. slotsin the flange, to the collar, the heads of the screws holding thecollarin place.

My invention may also be applied by casting the plate of stoves with anopening of some. width, as shown between the dotted lines a; a; and a1.a, fig. 3,

and covering or closmgthe opening thereby formed with av plate ofsnificient size, and fastened through slots, as lastdescribed; or theopening may be closed bymaking a raised projection on .the upper part ofthe collar-piece 0, corresponding. with the, opening in the top plate.

I prefer the methodfirst described, as that makes a Y stove of neaterappearance than either of the others, e and more effectually preventsthe escape of smoke, 880.,

through the fissure, when opened',-,by the greater expansion of theforward part of the plate.

' What I claim as my invention, and desire to-secure by Letters Patent,is-

1. A stove-plate with a crack or opening, substantially as described,and for the purpose set forth.

plate A A, for the purpose set fortln In witness whereof, I havehereunto signed my name, in the presence of two subscribing witnesses.BERNARD H. MENKE.

Witnesses:

S. S. Mourns, JAMES Moons.

O is cast separate from the plate 2. The comhination'of the collar-pieceO with the

